/Engine/Plugins/Experimental/PCG/Source/PCG/Public/PCGSubsystem.h
Cleans up the graph cache on an element basis. InSettings is used for debugging and is optional.
void CleanFromCache ( const [IPCGElement](API\Plugins\PCG\IPCGElement) * InElement, const [UPCGSettings](API\Plugins\PCG\UPCGSettings) * InSettings )